Visual acuity testing

If acuity of a patient is 20/40 this means that patient has to move to 20 feet to view what a person with normal vision can view at 40 feet.

If acuity is 6/12 indicates that the patient has to move to 6 metres to see what normal person can see at 12 metres.

Last updated byGanealingam Narenthiran on June 1, 2023

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